# 定义一个函数，计算两个数的和
add_numbers() {
    local num1=$1
    local num2=$2
    local sum=$((num1 + num2))
    echo "The sum of $num1 and $num2 is: $sum"
}

# 调用函数并传递参数
add_numbers 5 10
add_numbers 20 30
